Ophthalmic mounting



CCL 21, E Dl DVI-TO OPHTHALMIC MOUNTING 2 SHEETS--SHEET 1 Filed June 17,1948 I, lll/IIIIII Oct. 2l, 1952 E. D Dri-TO 2,614,459

OPHTHALMIC MOUNTING Filed June 17, 1948 2 SHEETS--SHEET 2 ,/lg. 13. Z

Patented ct. 21, 1952 orH'rHALMIc MOUNTING Eugene D. Ditto, Brookline,Mass., assignor, by

mesne assignments, to Marine Optical Manufacturing Co., a corporation ofMassachusetts Application June 17, 194s, serial No. 33,553

' (ci. :ss- 41) 18 Claims.

The present invention relates to ophthalmic mountings comprisinglnon-metal lens-holdingrr rims, and more particularly to mountings of thea1lshell.type, constituted of non-metal plastic material, likeCelluloid, ,Zylonite and the like.

type have usually been endless or continuous. As the non-metal material,though more or less ilexible or resilient, is not suliciently so topermit mounting lenses within the endless rims at ordinary temperatures,it has been necessary lto apply heatin order to permit of stretching orexpanding the rims for the purpose of increasing temporarily theircalibre. The lenses have been inserted into the lens-holding grooves ofthe endless rims while stretched, after which thenonmetal material hasbeen allowed to shrink lback to its normal size at ordinarytemperatures. These procedures have constituted a drawback for, besidesthe inconvenience attendant upon the heat application, and the dullingof the finish of thel plastic caused by the heat, the mounting has manytimes become distorted, in consequence. Frequently, indeed, thenon-metal material has cracked, following upon the shrinking process.

Endless or continuous non-metal rims Ahave accordingly heretofore beenproposed, so con-v structed as to permit lenses to be inserted withinthem without making it necessary previously to expand or stretch thenon-metalv material by heat. These have not, however, found commercialfavor.

Opthalmic mountings of the part-rim orv semi-v frame type have thereforealso been proposed, in which portions of the mountings are cut away.Because of this cutting away, the insertion of the lenses becomespossible without the necessity for applying heat to expand or stretchthe rims.v As parts of the lenses of these part-rim or rsemiframemountings are consequently without rim support, however, it is diiiicultto hold the lenses in place. To meet this difficulty, wire or otherpart-rim or other supports have been p-rovided additional to thesemi-frames, but these have in'- volved complexities of construction.

Other proposals have been to split the non metal rims, but these haverequired that suitable mechanism be provided for holding the ends of thesplit rims' together. Some of these proposals have involvedl securingoppositely disposed metal plates to the ends of split rims, one metalplate upon each of these ends; As the metal plates become thus mountedbetween the ends of the rims, they lare quite conspicuous, so that theyThe lens-holding rimsof mountings of this Cil i 2 necessarily proclaimto all observers the fact that"Y the rims are actually split. Othersplit-rim proposals,`not 'subject to this objection, have suc-j ceededin concealing the splits in the rims but, on the other hand, they havebeen clumsy and` unsightly in appearance for other reasons.

It is accordingly an object of the'present invention to providelnon-metal ophthalmic mount# ings of the split-rim type with new andimproved means for holding the ends of the split rims .to'.

gether.

Another object is to provide new and improved `means for concealing theends of the split rims of mountings of the above-described character.

A further object is to provide a better joint atV the ends of the splitrims. With the above and other objects in View, the` invention consistsmore particularly of the im--I proved ophthalmic mounting hereinafterdescribed, illustrated in the` accompanying drawings, and dened in theappended claims.

The invention will now be more fully described. in connection with theaccompanying drawings,v in which Fig. l is a plan of an ophthalmicmount,-` ing constructed according to a preferred embodi' ment of thepresent invention, showing frag-y ments of the temples; Fig. 2 is afront elevation. of the same; Figs. 3 and 4 are respectively fragmentaryside and rear views of the same; Figs. 5,v and 6` are sections, upon alarger scale, taken re-v spectively upon the lines 5 5 and -G of Fig..4looking in the directions of the respective ar.-A rows; Fig. '7 is aperspective, upon a larger scale, o'f a rivet-pin-carryingsplit-concealing metal` member; Fig. 8 is an enlarged section similarto' the sectionsof Figs. 5 and 6, taken upon the line 8 3 of Fig. l,looking in the direction of the arrows; Fig. 9 is a section taken uponthe line 9--9 of Fig. 8, looking in the direction of the arrows; Fig. l0is a section, upon a similarly en larged scale, taken upon the lineIll-40er Fig. 2, looking in the direction of the arrows; Figs. 11, 1'2,13 and 14 are views similar to Figs. l, 2, 3 and 4, respectively, of amodification; Figs. l5 and 16. are sections similar to Figs. 5 and 6,respectively.. taken respectively upon the lines |5-,5 and lE-l 6' ofFig. 14, looking in the directions of the` respective arrows; Fig. 1'7is a sectionsimilarto.. Fig. a, taken upon the une n n of Fig. is, iopkling in the direction of the arrows; Fig. 18 is a section similar to Fig.9, taken upon the line Ill-I8 of Fig. 12, looking in the direction ofthe arrows; Fig. 19 is a section similar tothe sections of Figs. l5 and16, but with the end piecesas v sembled; and Fig. 20 is similarly asection' similar.:

3 to the sections of Figs. 5 and 6, but with the end pieces assembled.

The ophthalmic mounting of the present invention comprises a non-metalfront I or 3| and a pair of non-metal temples 3 or 33. The nonmetalmaterial may be constituted of the nitrocellulose products known asZylonite or Celluloid, a compound 'of pyroxylin, campho'r and alcohol. tmay, however, be constituted also of any other suitable plastic, such asnylon plastic, or a plasticized vinyl resin polymer obtained, forexample, by polymerizing one or more vinyl derivatives. The non-metalfront I or 3| may be formed out of sheet material, -or it may yhemanufactured in other ways, 'as by molding. For molding, celluloseacetate may be employed, though this material may be used Asheet formalso.

The front I or 3I comprises a unitary'bridge member and two lens-holdingrims, each provided withV a lens-'receiving 'groove 25 for receivlng ya'lens 4 or 34. Each 'lense'holding rim Ais shown comprising a ldependingarm provided at its jl'owjer 'en di'with' a rearwardly extending noseguard 2 or 32. Y

In order 'to permit or inserting the lens 4 or '3"4 without heating Athelens-holding rims, each lensholding rim ofthe 'front l 'is' splitst '2sto provide a pair 'of end pieces 2"-1 and 28 of substant'la-l'ly the'same length,y and each lens-holding" rim of the front 3I is split at 56to provide a pair of end'pi'eces 51 and 58 vof substantially the samelength. 'Asv non-metal materialof 'the kind described above is nexibie,itis possible to open thev lens-holding rims at theirsplits ztand 56.The end pieces 21 and `28 are provided at the spli't`2t with oppositelydisposed vfaces I8 and |9'of subst'an'tially the saine length as thelength of the "end 'pieces 21 cnam, and the end pieces 51 and 58 at thesplit 56 `with oppositely Adisposed facesy 48 Aand 4'9"of 'substantiallythe same length as the .length o'f the end'pie'ces '51 and 58. Though'the "lens-'holding rims are shown slightly bowed out, so jas topresenta slightly convex appearancej'at the "front, it'will .beconvenient to speak of them as substantially planar. with' thisunderstanding, v'each pair of end pieces z'i-"a'nd 28,jsho'wn flat, maybe regarded 'as disposed in 'the plane of their lensfho'lding rim. Theend pieces 51 land 58, onthe other hand, are shown curved rearward, outofthe plane of their rims "34, and Yalso downward'at 'a suitableincline. The 'rearward curves of 'the 'end pieces 51' and 58 'may beproduoedhy suitable 'bending under pressure and heat. n

ach of the end pieces 21 28,51 andfS'B' 'is provided with a 'front face'65, ya 'rear face 66 and a 'flat end lface '61. The 'front face 65 and'the rear face 6'6 Aof the end piec'e 21 are cimnected by the face 18,the `'frontfface 615 andthe rear face "65 of the end piece 2 8 'areconnected by the face YI-B, the lfront face 65 and the rear face 86ofthe end piece 51 are kconnected by 'the "face 48, and the Yfront face65v andthe rear falce 66 "of the end 'piece 5'8 `are yconnected l'by theface' i9. Each temple 3 rvor 33`i's'provid'ed` with a r'o'nt face 68,'a' 'rear 'face es 'and' an end face To, respectvelycorrespo'nding tothefro'nt'face "65', the rear fa'ce 66 and 'the end face `61 of each ofvthe end pieces '21 '28,. 51 and 58.

vwo metal Vhinges are provided respectively corresponding to the twolens-holding rims of each front I or -3I .for respectively connectingpivotajlly the temples 3l or V33 to the corresponding lens-holding rimsthrough the medium of the pair of end pieces 21 and 28 or 51 and 58,respectively. Each hinge is shown comprising three metal hinge membersand a metal hinge pintle 6 or 36 about which they are pivoted.

One of these three hinge members pivoted about the hinge pintle 6 or 36comprises an Lsha'ped metal member mounted upon the temple 3 or 33. Thelong arm 5 or 35 of` 'each of these Lshaped members is shown flat, andset into a correspondingly shaped rabbeted fiat recess in the rear face69 of each temple 3 or 33 respectively, and the short arm 24 or 54 ofeach of these L-sllaped members, also shown flat, is disposed adjacentto and in contact with the end face 10 'of each temple 3 or 33,respectively.

A second of the three hinge members pivoted about the hinge pintle 6 or36 comprises a metal plate 8 or 39, 6l, respectively mounted upon therear face 66 of the end piece 21 or 51, respectively, with its lower endadjacent in vand alned or'iiush'fwith the 'connectingfaces l8`andrespectively. The third of the three hinge niembers comprises a metalplate I2 or 42, 55-,re`sp'ectively mounted upon the rear face 86 of theend piece 28 or 58, respectively, with its upper end adjacent to andalined or flush with the connecting faces 'I8 and 49, respectively.

According to the preferredV embodimentof the present invention,Villustrated inYFigs.- l to 10,

the metal plates 9' and vI2 are nat, randitheyfare shown atl leastpartly set into correspondingly shaped rabbeted iatA alined recesses invther-.ear faces 6B of the'r'espective flat end pieces 21 and 28. Asclearly shown, the'met'al plates Sahd I2 are'not mounted upon theoppositely `disposed connecting faces I8 and I9, respectively, ofthe endpieces 21'and 28. They are mounted upon the rear faces 68 only ofthe'end pieces 21 rand 28. The oppositely disposed connecting 'faces I8and I9 will therefore come into direct contact when, after a lens 4 hasbeen inserted 'into lthe lens-holding rim, the end pieces 21 fand'28 arebrought together.

According to the modification illustrated --in Figs. 11 'to 18, on theother hand., the metal members, 39, 6I and 42, 55 m'ounted upon the'curved endpieces 51 and SSYa're-L-shaped. VThe larger arms 39 and 42 ofthese Ls, 'curved 'to conform to the curves `of the curved end pieces'51 and 58., are' shown fset intocorrespondingly shaped rabbeted 'curvedalinedrecessesin the rear faces 66 of the respective curved end pieces51 and 58. respective L"s are flat, 'and they are shown disposedadjacent to and. vin 'contact 'with therespective end vfaces 61 'of the'end pieces :5.1 and 58. The L-shaped metal members V39,1II vand 42, 55'are clearly shown not mounted-"upon the oppositely disposed connecting.faceswl 'and 48, respectively, of the end pieces 51 and 58. They aremounted upon 'the rear faces 65 onlyof the end pieces 52 and 58. Theoppositely disposed connecting faces 48 and 48, like the 'oppositelydisposed connecting faces :I8 and If9,"w.i1l therefore come 'into directcontact 'when,ia'fte'r a lens A34 has been .inserted into-thelens-holding rim, 'the end pieces 51 kand 58ers brought' together.

The short ii'a't metal arms 24 of the L-shaped metal hinge ,plates 15,24 mounted on the temples 3 abut and engage against the vhat metal hingeplates 8 and I2, respectively mounted `upon the fiat end pieces 21 and28, in the illustrated `open positions of lthe temples 3. The 4iiatmetalsho-rt The lshorter arms lil and 55er- 'thel a other along the split 26.

arms 54 of the L-shaped metal hinge plates 35, 54 mounted on the temples33 will similarly abut land-'engage against the iiat metal short arms 6Iand 55, respectively, of the L-shaped metal hinge plates 39, 6I and 42,55, respectively mounted upon the curved end pieces 51 and 58, in theillustrated open positions of the temples 33.

The two ilat metal hinge plates 9 and I2, respectively mounted upon theen d pieces 21. and 28 of the front I, are shown integrally providedwith" respective ears I6 and I3, respectively provided with smoothcylindrical apertures II and I4. The L-shaped metal hinge plate 5, 24,

mounted upon the temple 3, is similarly shownL the ears 29 and 23, like`the apertures II and I4 of the respective ears I6 and I3, are smooth,

but the aperture of the ear 38 is screw-threaded to lreceive screwthreads upon the free end oi?r the hinge pintle 6. vThe opposite end oi'the hinge pintle 6 is provided with a cylindrical enlarged head thatbecomes seated in a correspondingly shaped countersunk recess inthe ear29. Not only does the hinge pintle 6 serve as a pivot about which thetemple 3 may swing, therefore, but it also cooperates with the hingeplates 5, Sand I2 to hold the end pieces 21 and ,28 together, with theoppositely disposed connecting,

facesl8 and'I9 of the respective end pieces 21 and 28 adjacent tok andin contact with` each To prevent the lensholding vrim becomingaccidentally ropened at thelsplit 26, thethrea-ded end of the hingepintle 6 may be provided withian aperture I6;the wall of which. may beexpanded .orswaged radially I outward into tight engagement with thescrewthreaded wall of the aperture in the ear 38, as described inVvLetters Patent 2,036,550, issued April 7,1936, to Frederick A. Stevens.

The temples 33v are swingablyV mounted upon the-end vpieces 51and 58 ofthe front 3I in siniertured ear "'66 of the metal hinge member 35,

54'that is mounted upon the temple 33; The

hinge` pintle 36, like the hinge ypintle 6, is provided with an enlargedcylindrical head that is apertured ear 53 and the end threadedly ap-'Hseated in a correspondinglyH shaped countersink Y of the ear 59 and witha threaded end, rthread'- ed into the threads of the threaded aperturein the hinge plates I2.

necting faces 48 and149 ofthe-'respective end v ture I6 into tightengagement withr the threads of the threaded aperture of the ear 36.

In view of the fact that the long arms 39 and 42 of the L-shaped curvedhinge members 39.k 6I

and 42, 55 are longer than the at metal hinge plates 9 and I2, it ispreferred to-supplement the action of the hinge pintle 3 6, in holdingthe end pieces 51 and I58together, with further'holding action providedby two additional apertured ears 62 and 64, respectively provided uponthe long arms 39 and 42 of the metal L-shapedhinge.

members 39, 6I and 42, 55, and held together by a screw 63. the samenature as the hinge pintles 6 and '36,- though shorter, in that they areprovided with enlarged cylindrical heads seated in countersunk recessesof the ears 62 and threaded free ends threaded in threaded walls of theapertures ofA the ears 64. The screws 63 may also, if desired, beprovided with apertures like the apertures I6 and 46 for swaging intothe walls of the threaded apertures in the ears 64. The ears 62 and 64are shown disposed intermediately between the hinge pintle 36 and thefree ends of the long arms 39 and 42, respectively, of the hinge members39, 6I and-42, 55.

It is now in order to describe how the hinge 'I members vare secured tothe end vrpieces 21 and '28, and 51 and 58, respectively, of therespective frontsl and 3| and to the temples .33, and how the splits 26and 56 between the end pieces 21 and 28 and the end pieces 51 and58,respectively,

are concealed.

For a lpurpose that will presently appear, each end piece 28 is providedin its front face 65 with a rabbeted flat recessV I1 extending to theconnecting face I9, and each end piece 58 is similarly provided onitsfront'face 65 with a rabbeted iiat recess 41 extending to the connectingface 49. The hinge plates I2 are fixed in their flat rabbeted recesseson the rear faces 66 of their x end pieces 28 by rivets I5 `that extendfromv the walls of the recesses I1 through the non-metal f material ofthe end pieces 28 Yinto openings in The hinge members 42, 55 aresimilarly xed in their curved rabbeted recesses on the rear faces 66 oftheir end pieces 58 by rivets 45 that extend from the walls of therecesses 41 through the non-metal material of the end pieces 58 intoopenings in the longerarms 42 of the hinge members 42, 55.

The hinge plates 9 are fixed inv their fiat rabbeted recesses on therear faces of their end pieces 21 by rivet pins 8 integrally projectingfrom the rear faces of flat metal members 1 through the non-metalmaterial of the end pieces 21 into openings in the hinge plates 9. TheYhinge members 39, 6I are similarly fixed in their curved rrabbetedrecesses on the rear faces 66 of their end .pieces 51 by rivet pins 38integrally projecting from the rear faces of correspondingly curvedmetal members 31 through the non-metal matea, rial of the end pieces`51into openings in the longer arms 39 of the hinge members 39, 6I. Theflat members 1 are set into correspondingly shaped rabbeted flatrecesses 1I in the front To prevent the y The screws 63 are shown as ofsecond member having frontr and rear faces, a

hinge pivotally connectingthe members comprising three hinge members anda hinge pintle about which the hinge'membersl are pivoted, two of thehinge members being respectively mounted upon the rear faces only oftheends of the lensholding member adjacent to rthe respective oppositelydisposed connecting faces,l the third hinge member being mounted uponthe rear face of the second member, a `concealing member secured to thefront' face of one of the ends of the lens-holding member projectingbeyond its connecting face and integrally provided with a pin extendingthrough the said one end of the lens-holding member and into the hingemember mounted thereon to securerthe said hinge member to the rear faceofthe said one end of the lens-holding member, means securing to therear face of the other end of the lens-holding member the hinge membermounted thereon, and means securing the third hingemember :to the rearface of the second member, the hinge pintle and the hinge memberscooperating kto hold the endsof the lens-holding member together withthe oppositely disposed connecting faces in contact with each other andwith the concealingmember concealing the split in the lens-holdingmember from the front when the ends of the lens-holding member are heldtogether and to hold the second member to the lens-holding member.

4. An ophthalmic mounting comprising a split lens-holding rim offlexible non-metal material having front and rear faces and the ends ofwhich are of substantially the same length and provided with`yoppositely disposed connecting faces of substantially the said samelength, a

temple having front and rear faces, and a hinge holding the ends of thelens-holding rim together with the oppositely disposed connectingy facesin contact with each other.

5. An ophthalmic mounting comprising a split lens-holding rim offlexible non-metal material having front and rear faces yand the ends ofwhich are of substantially the same length and provided With oppositelydisposed lconnecting faces of substantiallythe said ysame length, a

temple havingfront and rear faces, and a hinge pivotally connecting thelens-holding rim and the temple comprising three hinge members and ahingle pintle about whichthe hinge members are pivoted, one of the hingemembers being mounted upon the rear face of the temple-and beingprovided with three'alined apertured ears, the other'two of thehingemembers being respectivelymounted upon 'thelrear faces only oftheends of the lens-holding rim adjacent to the respective oppositelydisposed connecting faces and being'respectively provided with aperturedears respectively inserted between the middle and the end ears of thethree alined ears, andthe hinge pintle extendingthrough the apertures inthe ears to cooperate with vthe hinge members in f. order to holdthe-ends ofthe lens-holding rim together with'the oppositelydispose'dconnectingl faces in contact with each other and to hold the temple tothe lens-holding rim.

6. An ophthalmic mounting comprising a splity lens-holding rim offlexible non-metal material having front and rear faces andthe endsofwhich are of substantially the same length and provided with oppositelydisposed connecting faces of substantially the said samelength, a

being provided with-three alined apertured ears, l

the other two of the hinge members being respectively mounted upon therear faces only o fthe endsv of the lens-holding rim Aadjacent totherespective oppositely disposed connecting faces and being respectivelyprovided-- with apertured ears respectively inserted between the middleand the end ears of the three alined ears,;gone of the end ears beingprovidedwith 'a -cOunterSunk recess and the aperture of rthe other endvear being threaded, the hinge'pintlebeingprovided with a threaded endthreaded in the aperture of the threaded ear and an enlarged head seatedin the countersunk recess, and the threaded end of the pintle beingprovided with an aperture the wall of which is swaged into contact withthe threaded wall of the threaded aperture.

7. An ophthalmic mounting comprising va split flexible lens-holding rimhaving front and rear faces and the ends of which are of substantiallythe same length and provided with oppositely disposed connecting facesof substantially the said same length, a temple having front and rearfaces, and a hinge pivotally connecting the lensholding rim and thetemplecomprisingv three hinge members and hinge pintle about which'thehinge members are pivoted, two ofthe hinge members being respectivelymounted upon the rear faces only ofthe ends of the lens-holding rimadjacent to the respective `oppos'elyfdisposed connecting faces, thevthird'hinge member being mounted upon the rear face of the temple-'andthe hinge pintle and the hinge members cooperwhich arefof`substaritially'the same length and provided with oppositely disposedconnecting faces of substantially the said same' length, a

temple Vhaving front and rear faces,'a hinge piv-` otally connecting thevlens-holding rim andvthe temple'coi'nprising three'hinge 'members and ahinge pintle aboutfwhic'h thehinge members #are pivoted,ltwofo f thehingev membersbe'ing respectively 4'mounted upon the rear vfaces onlyofthe ends of the lens-holding rim adjacent to f the respectiveoppositely disposed connectingfaces, hethird hingemember beingmountedupoii' the rear face of the temple, a 'concealing member securedtot the lfront-falce o-f one lof thewe'ndsof the lens-holdingrim"p'rdjecting beyond `its con.- necting vface and integrally providedwithfa` pin extending 'through theA said one' endjof 'the' lensholdingrim and intothe hinge'mem-ber 'mounted thereon to securethe's'aidihin'ge member'toi-the :reary face ofthe vsaid one end 'of thevlens-holding rim, `means securing tothe rear faceof-the'other thereon,.and means securing the third hinge :gerente lend' of -thelens-hold-ingrim the hinge member mounted thereon, and means securing the thirdr.lil-nge.. member to thefrearfacefof the temple,

fthe hinge-pintle and the-hinge membersy cooper- -fating*to-holdthe endsof the lens-holding rim.

*together 'with the oppositely' disposed connecting faees' in contact'with eachother and with the concealing member concealing the split inthe vilens-holding'rim from the front when the ends of the-lens-holdingrim are held togetherand to 'stely disposed connecting faces' of`substantially .thefsaidsame.length, the rear faces being provided.withiali'ned recesses L-shaped in cross-section respectively adjacent'to ythe oppositely disposed connecting faces, '.a temple having a frontface nd rear facefprovidedwith a recess L-shaped oss-section near itsend, 'a 'hinge lpivot'ally "".connect'irigthe lens-holding rim'andthe'temple comprising three hinge members and a hinge `.pintl'eabout Whichthehinge members are pivot- `e'd, tWoof the' hinge members beingrespectively .mounted'in the recesses only. ofthe end .pieces adjacenttoland ush With the' respective opposit'ely'disposed connecting faces,thev third hinge memberbeing mounted' inthe recess of thetem- 'p1e,.andthe hinge pintle and the. hinge members cooperating to. holdthel endpieces together' with ".theiioppositely disposedv connectingrraces in.con- '-.t.etwith each other." and 'toholdi the temple tothe"A.lens-holdingrim.

JBL...Anophthalmicmounting comprising. a split densi-holding? rim'vofifiiexible non-'metall material .thavingiront andzrear faces'.andi`the ends :iof whicharel' of `substantially the.v same length J andvriespectively provided with end piecesfhavingrop- Spositely disposed'connecting faces .of substan- .St'ial'lythe said same length, a templehaving 'front/2 and rear i faces, a hinge pivotally `con- 4necting' thelens-holding. rimrand vthe temple comprising'three Yhinge .members .anda hinge 'pintl'e "i about "which the hinge members are .Tpivoted',.`t'wo ffthe hinge members being respectively' mounted upon the'rear'faces only. of

theend piecesadjacent to thev respective-,oppositely disposed connectingfaces', the third: hinge "member Vbeing mounted upon. the rear face ofthe vtenrple, aconcea-lingmember secured tor the front faceI of one ofthe'endr pieces projecting beyond its connecting face andintegrallyprovidedwith a pin'extending through thesaid one end piece'and into thehinge member.` mounted thereony to secure thesaid'h-ingememberto therear face of the-said one. end piece, means ysecuring to the rearl faceof the other end piece the hinge member mounted member tothe rear -faceof the temple, the hinge pintlefandl the hinge members cooperating toVl'iold the end. pieces together lwith the oppositely disposedconnecting -facesi-ncon-tact with each 'other and-with the concealing.memberconcealing `the splitin.the..lensholding rim from the front -whenthe `endpieces areheld together and to hold the-temple to .thelens-holding rim.

11. ophthalmic mounting. comprising asplit."v

dens-'holding rim -ofexible non-metall material .f having front andrearVfaces 'and' the Yendsfof whi'chf are' of substantially the same length'and 'spectively.provided` With.V end pieces yhaving. op-

i12 tiallylthef saidr same; length;V the' front faces zbeing provided'.with? aligned@ recesses L-shaped` inicrosssectionrzrespectivelyf;adjacenttto the oppositely dispose-d.connecting.V races, the.: rear faces." being 2alsoproyi'dedi` .withalined recesses.v L-shapedllin icrossesection:respectively .adjacent'tor the oppoisitely'fdisposedf .connecting Ifaces, a. temple 1.havlingv sai-front face zand: va rear 'faceprovi'ded Awith 12a/recess.L-shaped'iin:orossesectionnear its-zend, ahin'gepivotallyconnectin'gfthe lens -holding yrim 'and thetemp'lexcompri'singthree: hinge v'members ".andza'v Vllingefpintle aboutiV whichxthe hinge:membersiarepivotedgitwoofzthehinge'membersbeing .trespectively;imounted.inf.' ftherecesses only inthe rear faces of.' the: end .pieces adjacentv-tosand ush. 'with the v.respective- L oppositely disposed.connectingfaces the third; hinge: member." being vmountedifin therecess of..the'ternple; and. a con- ,.cealing.'memberimcunted. in `therecess.: in. the 'front face; off oneflofa.. the end'- pieces projectingbeyond thefconnecting face-ofthe said. one end 'Jpiece;.thehingepintleand .the hingemembers' cooperating-.tof hold! theendlzpieces vtogether." with the oppositely'."di'spo'sedi connecting.' faces in con-.tact "with each J other'. andmwith. the concealing fmemberi projecting; into .there'cessi 'in Athe front f facet of'the otherendlpieoetov-'conceal they split in '.the: lens-holding" rim from. theifront Whenthe iend pieces are held 'f together :and to hold the 3o templeit'o thelens-holding rim..

12. An ophthalmic mounting'cemprisinga sub- '.stantia'lly .planarSplitlens-hol'ding" rim of ilexible nonsmetalzmaterial' having" front.and rear faces andthefends ofwhich are of substantially'the `:sameiengtnand respectively prrcvidecl-` with end :pieces substantially in.the plane? of' the rim' havin'goppositely disposedconnecting'ffaces ofsub` stantially theA .said-same.V length.. a temple'vhavsing;fr'cntsandrear'z faces, axhing'e pivotally con-"necting.t-h'elens-holding rimandthe temple com- Wpricing three?. hinge1members' andra hinge pintle faloout` which the ehing'e members arepivoted, twoftofthefrhin'ge .members being. respectively .'mountedfAupon" thef rearfaces: onlyo'fthe end :pieces` a'dj acentf to'- th'erespective; oppositely' 'dis- 'posedf faces, thethird :hinge 'member'being mountedl upon?tlne'rear.` face ofathe. templefa concea'lingmembersecuredto the'f'ront face ofone of :the end 'pieces-projecting beyond.its' connect- O fing. face` andi integrallyprovided Withf a pinextending through the said oneend piece. and into fthehinge'm'embermountedr thereon. t'o secure the isafdxiiiingermember'to Ltherear." 'face of the :said'i'one 'endl piece, means securing to ther-ear.iface ofthe other-end.' piece the hinge member mounted thereon, andmeans" securing the third hingeimember tothe-rear.' facefo'fthe temple,the :'.hinge pintlean'd thehingemembers cooperating :to hold the' lend.pieces :together with. the. opposite- :ly disposed. connecting? faces"in ccntactfwith each :other` andiw'ith ther concealing member conceal-.ing the1split.in".the lens-holding rim from the ffrontfwhen .therendpiecesxare held'ftogether and 'to holdlthe'templeitcthe lens-holdingrim.

i 13. opthalmic'mounting-v comprising afsplit t lens-holding" rim* ofvflexible'iion-metal material .Ihaving front and`v rear.' faces andthe-endsof which`l are .respectively provided:'With'rearwardly :curvedendpieceshaving' oppositelydisposed con- 701 necting. .faces, ;a Itemple? having'.V front and rear faces-, a hinge? pivotal-lyYconnecting'.y the lens-holdimgrimi andz'th'e" temple comprising! threehinge :members and a hinge piI'itIe'"- 'about which the".liingemembersiare `pivoted, .two of the nhinge 7 5:.m'emlbers .beingrespectively mounted upon the rear faces only of ,the end 'piecesadjacent'to the respective'iollo'ositelyI disposed faces, the thirdhinge member being mounted upon the rear face of thetemplejaconcealingmember secured to r`the front face of one of the end piecescurved to conform to the curvethereof projecting beyond its'connectingface and integrally provided with "a' pin extending through the said'oneend piece yand into the hinge member mounted thereon to secure the saidhinge member to the rear face lof said' one end piece, means securing tothe rear face of the other'end piece the hinge mem- `ber mountedthereon, and means securing the third hinge member to the rear face ofthe temple,

'the .hinge pintle and the yhinge members -cooperating'to holdthe--iendpieces together with y"the oppositely disposed connecting facesin contact with each other and with the concealing f. 'member concealingthesplit in the lens-holding f rim` from the front when the end piecesare held 4together 'andto hold `the temple to the lensholding rim. 1 Y

lpectively corresponding tothe two lens-holding l'rims and respectivelyconnecting temples pivotallyto thev corresponding lens-holding rims,each Vhinge -comprising three hinge vmembers and a l hingel pintle aboutwhich its hinge members are A ypivoted, tvvo of the hinge members ofeach hinge being respectively mounted'upon the rear faces only of theend pieces'of the corresponding lensholding rim adjacent to therespective oppositely ,disposedconnecting'k faces, the third hinge memfbers'offthe hingesbeing respectively mounted upon the rear faces of thetemples, a concealing member secured to the front face of one of the endpieces of each lens-holding rim projecting beyond the connecting face ofthe said one end piece and integrally provided with a pin extendingthrough the said one end piece and into the hinge member mounted thereonto secure the said hinge member to the rear face of the said one endYpiece,

vmeans securing to the rear face of the other end of` each lens-holdingrim the hinge members mounted thereon, and means securing the thirdhinge members of the hinges to the rear faces of the respective temples,the hinge pintle and the hinge members of each hinge cooperating to holdthe end pieces of the corresponding lens-holding rim together with theoppositely disposed connecting faces thereof in contact with each otherand with the concealing members concealing the splits in thelens-holding rims from the front when the end pieces are held togetherand to hold the temples to the respective lensholding rims.

15. An ophthalmic mounting comprising a front and a pair of 'templeseach having front and rear faces, the front having a unitary. bridge andtwo split substantially planar lens-holding rims of iiexible non-metalmaterial having front and rear faces, the ends of each lens-holding rimbeing provided with end pieces of substantially the same length andsubstantially in the l planes of the respective rims and havingoppositely disposed connecting faces of substantially the said samelength, two hinges respectively corre- `sponding to lthey lens-holdingrims and respectheend pieces of the corresponding lens-holding .rimadjacent to the respective oppositely ydisposed connecting faces', thethird hinge members of the hinges being respectively mounted upon therear faces of the temples, a concealing membersecured to the front faceof one of the end pieces of each lens-'holding rim projecting vbe- "yondthe connecting face of the said one end piece and integrally providedlwitha pinf extending through the said one end piece and into the hingemember mounted thereon to secure the said hinge member to the rear faceof the said one end piece, means securing to the rear face of the otherend piece of each lens-holding rim the hinge member mounted thereon, andmeans securing the third hinge members of thel hinges to the rear facesofthe respective temples, the hinge pintle and the hinge members of each`hinge cooperating to hold the end pieces of the correspondinglensholding rim together with the oppositelyy r`disposed connectingfaces thereof in contact with each other and with the concealing membersconcealing the splits in the lens-holding rims from the front when theend pieces are held together and to hold the temples to the respectivelensholding rims. f

16. An ophthalmic mounting comprising a front and a pair of temples eachhaving front and rear faces, the front :having a unitary bridge and twosplit lens-holding rims of flexible nonmetal material having front andrear faces, the ends of each lens-holding rim beingprovided withrearwardly curved endv pieces having oppositely disposed connectingfaces,. two hinges respectively corresponding to the lens-holding rimsand respectively connecting the temples pivotally to the' correspondinglensholding rims,l each hinge comprising three hinge members and a hingepintle about which its hinge members are pivoted, two of the hingemembers of each hinge being respectively mounted upon the rear facesonly of the end pieces of the corresponding lensholding rim adjacent tothe respective oppositely disposed connecting faces, the third hingemembers of the hinges being respectively mounted upon the rear faces ofthe temples, a concealing member secured to the front face of one of theend pieces of each lens-holding rim curved to conform to the curve ofthe said one end piecev projecting beyond the connecting face of thesaid one end piece and integrally provided with a pin extending throughthe said one end piece into the hinge member mounted thereon to securethe said hinge member to the rear face of the said one end piece, meanssecuring to the rear face of the other end piece of each lensholding rimthe hinge members mounted thereon, and means securing the third hingemembers of the hinges to the rear faces of the respective temples, thehinge pintle and the hinge members of each hinge cooperating to hold theend pieces of the corresponding lens-holding rim together with theoppo'sitely disposed connecting faces thereof in contact with each otherand with the concealing members concealing the splits in thelens-holding rims from the front when the f end pieces are held togetherand to hold the temples to the respective lens-holding rims.

.. Amophthalmimmounting. comprisingfazsplit L lenseholdingr rinrot.flexible non-metakmaterial fhavingi. fronti..v andxrean faces. and.the.: ends of '.-whcn' are respectively lprovided. 'vv-ith,-v end piecesof substantially' .the` same lengthl 'andi having op- `positelyfdisposedY connecting' faces; of substan- `.tialhr the saidfsame length,aitemplehaving/ front :..vand rear. facesga-.hingei pivotallyconnectingA i the .lens-holding rim. and; .the temple .comprisingthreeghinge mem'l'aersiand a.v hinge'. pintleVv about which'v the hinge:members are.: pivoted,Y two'of the hingemembers being.K respectively"mounted upon the.;rearz faces. yonly Yof the end .pieces adjacent toandzfiiish with thesrespectiveoppositely disposed 'connecting fac'esgfthe: third. hinge member being moimted upon. the4 rear; face of, the;temple, :.a.. concealing 'member secured to: and.y projecting1forwardebeyondthetfrontface of one-'of the end pieces.: and`Aprojecting' beyond; the connecting. face of .thevsaid one'. piece. and.integrally provided..

A:Within ipinentending through the said.' .oneend `pieceY andinto:thehinge member mounted there- Unito: secure the said: hinge member"..to the. rear J facelfof". the' saidfsone.4 end'xpiece',. means:securing 1 toi the rear faceioffthe other end-piece the hinge vmember'mounted thereon, and. means securing the. .thirdihinge member totherear'. facerof. the "temple,'the1 hinge pintle. and the. hinge: memberscooperating: toV hold. the;l end pieces together with `the oppositelydisposed connecting faces' in. contact with. each. other and with .the`concealing memberz concealing the.I splitv :iny the lens-holding rimfrom the front when the end piecesare. held .togetherfand toholdthe ftemple to the .lens- .iholdingrixn 18'. An:ophthalmic-mounting:comprising a split .lenseholdingrim of flexible.non-metal. material i front and .I rear faces andthe endsfzofwhich:are.;respectively.provided with.. end pieces :ott substantially'theisameL length and: having, oppositely disposed connecting faces. ofsubstan- 1 ti'allytthe.saidv `same length, the rear faces.` beingprovided with: alined; recesses L-shapedl in.crosssection.;respectivelyV adjacentlto ther oppositely .disposed:connectingffaces ia, templeafhavingffa spectively mounted.` in therecesses'on'ly in. the

rear: faces; of.. the.` end... pieces..-adjaeent to.; and

Aflushwithithe respectiveoppositely disposed connecting faces;thefzthird; hinge .memberwbeing 4mounted in the-- recess. of the.ltemple; and4 az. concealing Vmember-.secured to.. and. projectingforward beyondthe front'v face*v of one: ofMthe-'end .pieces and: projectingbeyond the.. connecting;face

of the: said.ione\1end piece;; the hinge pintle, and the hinge; memberscooperating; to.l hold-the; end piecestogetherwith theopposi-tely-'disposect connecting faces. in; contact with I.each .otherand with thef concealing'member'vconcealing the.` split in thelens-holding rim from the front when. the end pieces are held togetheran-d to holdtheitemplato thelens-'holdingrim EUGENE Dl .DITTOQ 'Thefollowing references are of; record.v in, .the file of this' patent:

UNITED STATES PATENTS France May; 1933

